Consolidated Statements of Income (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Interest Income
Interest and fees on loans and leases	$ 1,502	$ 1,520
Interest and dividends on securities	234	150
Interest on other earning assets	7	6
Total interest income	1,743	1,676
Interest Expense
Interest on deposits	121	171
Interest on federal funds purchased, securities sold under repurchase agreements and short-term borrowed funds	1	4
Interest on long-term debt	185	216
Total interest expense	307	391
Net Interest Income	1,436	1,285
Provision for credit losses	288	340
Net Interest Income After Provision for Credit Losses	1,148	945
Noninterest Income
Insurance income	271	250
Service charges on deposits	137	135
Mortgage banking income	216	95
Investment banking and brokerage fees and commissions	89	87
Checkcard fees	43	72
Bankcard fees and merchant discounts	54	46
Trust and investment advisory revenues	45	43
Income from bank-owned life insurance	30	30
FDIC loss share income, net	(57)	(58)
Other income, net	52	14
Securities gains (losses), net
Realized gains (losses), net	(4)	21
Other-than-temporary impairments	(3)	(1)
Non-credit portion recognized in other comprehensive income	(2)	(20)
Total securities gains (losses), net	(9)	0
Total noninterest income	871	714
Noninterest Expense
Personnel expense	730	694
Foreclosed property expense	92	143
Occupancy and equipment expense	153	154
Loan processing expenses	63	56
Regulatory charges	41	61
Professional services	35	31
Software expense	32	26
Amortization of intangibles	22	26
Merger-related and restructuring charges, net	12	(2)
Other expenses	205	183
Total noninterest expense	1,385	1,372
Earnings
Income before income taxes	634	287
Provision for income taxes	189	53
Net income	445	234
Noncontrolling interests	14	9
Net income available to common shareholders	$ 431	$ 225
Earnings Per Common Share
Basic	$ 0.62	$ 0.32
Diluted	$ 0.61	$ 0.32
Cash dividends declared	$ 0.20	$ 0.17
Weighted Average Shares Outstanding
Basic	697,685	695,309
Diluted	707,369	704,101